6 Best Progressive Dynamics RV Converters for Lithium Batteries in 2026: A Practical RV Guide

The PD9360V is a 60 amp converter in the Inteli-Power 9300 series, with a 105 to 130 VAC 60 Hz input at 1,000 watts and a 13.6 to 14.7 VDC output. Its listing describes four modes: green for flooded lead acid, blue for lithium with a two-stage charge at a nominal 14.4 VDC that drops to 13.6 VDC once current falls, white for AGM at 14.0 VDC then 14.7 VDC absorption, and magenta for a constant 13.6 VDC supply with the full rated load available.

It ranks first because 60 amps suits most travel trailers and costs $269, which is $26 less than the 80 amp PD9380V and $56 more than the 30 amp PD9330V. That is about $4.48 per amp against $3.69 for the PD9380V and $7.10 for the PD9330V. Against the PD4060KV it is the same 60 amps for $26.44 less, yet it adds the lithium mode that the PD4060KV listing never mentions.

The PD9380V is the 80 amp member of the 9300 series with a 105 to 130 VAC 60 Hz input at 1,300 watts and a 13.6 to 14.7 VDC output. It has the same four LED modes as its siblings: green flooded, blue lithium two-stage at a nominal 14.4 VDC, white AGM at 14.0 VDC then 14.7 VDC, and magenta constant voltage at 13.6 VDC. At 14.4 volts its 80 amps is about 1,150 watts of output.

It costs $295, $26 more than the PD9360V for 20 amps extra, which is the lowest cost per amp here at about $3.69. Charging an empty 300Ah lithium battery at 80 amps takes roughly three hours, against about four hours at 60 amps, before house loads are counted. It costs $82 more than the PD9330V for 50 amps extra.

The PD9330V is the smallest 9300 series model: a 30 amp converter with a 105 to 130 VAC 60 Hz input at 500 watts and a 13.6 to 14.7 VDC output. It has the same four charge modes, including the blue lithium mode at a nominal 14.4 VDC that drops to 13.6 VDC after the current falls, so it supports lithium at a price below any 60 or 80 amp unit.

It ranks third because 30 amps is thin for a modern trailer. A 100Ah lithium battery at 80Ah to refill needs roughly 2.7 hours at full output, and any 12V loads running during that time stretch it out.

The PD4060KV is a 60 amp converter from the 4000 series with a Charge Wizard. Its listing highlights a compact, lightweight build, reverse battery protection with easy-to-replace fuses, electronic current limiting, protection against high and low AC input, a variable-speed cooling fan and automatic thermal protection.

What it offers is a direct fit in older rigs wired for the 4000 series converter section, where physical fit matters.

The PD4045KV is a 45 amp converter in the 4000 series with a Charge Wizard. The listing describes a compact and lightweight body, reverse battery protection with easy-to-replace fuses, electronic current limiting, AC input protection for high and low voltage, a variable speed fan and automatic thermal protection. As with the PD4060KV, there is no mention of lithium.

It ranks fifth. At $235.54 it costs $22.54 more than the 30 amp PD9330V, which has a stated lithium mode, and $33.46 less than the 60 amp PD9360V. That makes it about $5.23 per amp, above the PD9360V's $4.48.

The PD4645V is a 45 amp converter and charger in the 4600 series with a four-stage Charge Wizard that the listing says increases battery life and will not boil the battery. It is described as easy to install and as replacing Parallax or Magnatek 6345, Parallax 7345, Parallax 8345 and WFCO 8945 converter sections. It states no lithium mode.

It ranks last for lithium buyers because it costs $293.67, which is $58.13 more than the PD4045KV for the same 45 amps and $24.67 more than the 60 amp PD9360V, which lists lithium. That works out at about $6.53 per amp. Its value is as a drop-in for specific older converter sections, since the replacement list is the clearest compatibility information in any of these listings.